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  <meta charset="UTF-8">
  <meta name="viewport" content="width=device-width, initial-scale=1.0">
  <title>Document</title>
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<body>
  <script>
    //1.利用new Object() 创建对象

    var obj1 = new Object();

    //2.利用 对象字面量创建对象

    var obj2 = {};

    //3.利用构造函数创建对象
    function Star(uname,age) {
      this.uname = uname;
      this.age = age;
      this.sing = function(){
        console.log(this.uname + '会唱歌')
      }
    }

    var ldh = new Star('刘德华',18);
    var zsx = new Star('4xi',20);
    console.log(ldh);
    zsx.sing();

  </script>
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